package cn.edu.scau.cmi.zhaotingjie.chapter05;

public class Lader5_7 {
	double top,high;
	static double bottom;
	void setTop(double a) {
		top = a;
	}
	void setBottom(double b) {
		bottom = b;
	}
	double getTop() {
		return top;
	}
	double getBottom(){
		return bottom;
	}
}
